1 files changed, 51 insertions, 0 deletions
diff --git a/src/support/debug.cpp b/src/support/debug.cpp
new file mode 100644
index 000000000..15b708d5e
--- /dev/null
+++ b/src/support/debug.cpp
@@ -0,0 +1,51 @@
+/*
+ * Copyright 2019 WebAssembly Community Group participants
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "support/debug.h"
+
+#include <cstring>
+#include <set>
+#include <string>
+
+static bool debugEnabled = false;
+static std::set<std::string> debugTypesEnabled;
+
+bool wasm::isDebugEnabled(const char* type) {
+  if (!debugEnabled) {
+    return false;
+  }
+  if (debugTypesEnabled.empty()) {
+    return true;
+  }
+  return debugTypesEnabled.count(type) > 0;
+}
+
+void wasm::setDebugEnabled(const char* types) {
+  debugEnabled = true;
+  // split types on comma and add each string to debugTypesEnabled
+  size_t start = 0;
+  size_t end = strlen(types);
+  while (start < end) {
+    const char* type_end = strchr(types + start, ',');
+    if (type_end == nullptr) {
+      type_end = types + end;
+    }
+    size_t type_size = type_end - types + start;
+    std::string type(types + start, type_size);
+    debugTypesEnabled.insert(type);
+    start += type_size + 1;
+  }
+}